Ramachandran Kodappally. (2007). Encyclopedia of inventions. Dronacharya Publications.
Stile di citazione ChicagoRamachandran Kodappally. Encyclopedia of Inventions. Kozhikode: Dronacharya Publications, 2007.
Citazione MLARamachandran Kodappally. Encyclopedia of Inventions. Dronacharya Publications, 2007.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.